1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package com.android.internal.app;
18
19import com.android.internal.R;
20
21import android.app.SearchManager;
22import android.content.ComponentName;
23import android.content.Context;
24import android.content.Intent;
25import android.content.pm.ApplicationInfo;
26import android.content.pm.PackageManager;
27import android.content.pm.ResolveInfo;
28import android.os.Bundle;
29import android.os.IBinder;
30import android.os.RemoteException;
31import android.os.ServiceManager;
32import android.provider.Settings;
33import android.util.Log;
34
35/**
36 * Utility method for dealing with the assistant aspects of
37 * {@link com.android.internal.app.IVoiceInteractionManagerService IVoiceInteractionManagerService}.
38 */
39public class AssistUtils {
40
41    private static final String TAG = "AssistUtils";
42
43    private final Context mContext;
44    private final IVoiceInteractionManagerService mVoiceInteractionManagerService;
45
46    public AssistUtils(Context context) {
47        mContext = context;
48        mVoiceInteractionManagerService = IVoiceInteractionManagerService.Stub.asInterface(
49                ServiceManager.getService(Context.VOICE_INTERACTION_MANAGER_SERVICE));
50    }
51
52    public boolean showSessionForActiveService(Bundle args, int sourceFlags,
53            IVoiceInteractionSessionShowCallback showCallback, IBinder activityToken) {
54        try {
55            if (mVoiceInteractionManagerService != null) {
56                return mVoiceInteractionManagerService.showSessionForActiveService(args,
57                        sourceFlags, showCallback, activityToken);
58            }
59        } catch (RemoteException e) {
60            Log.w(TAG, "Failed to call showSessionForActiveService", e);
61        }
62        return false;
63    }
64
65    public void launchVoiceAssistFromKeyguard() {
66        try {
67            if (mVoiceInteractionManagerService != null) {
68                mVoiceInteractionManagerService.launchVoiceAssistFromKeyguard();
69            }
70        } catch (RemoteException e) {
71            Log.w(TAG, "Failed to call launchVoiceAssistFromKeyguard", e);
72        }
73    }
74
75    public boolean activeServiceSupportsAssistGesture() {
76        try {
77            return mVoiceInteractionManagerService != null
78                    && mVoiceInteractionManagerService.activeServiceSupportsAssist();
79        } catch (RemoteException e) {
80            Log.w(TAG, "Failed to call activeServiceSupportsAssistGesture", e);
81            return false;
82        }
83    }
84
85    public boolean activeServiceSupportsLaunchFromKeyguard() {
86        try {
87            return mVoiceInteractionManagerService != null
88                    && mVoiceInteractionManagerService.activeServiceSupportsLaunchFromKeyguard();
89        } catch (RemoteException e) {
90            Log.w(TAG, "Failed to call activeServiceSupportsLaunchFromKeyguard", e);
91            return false;
92        }
93    }
94
95    public ComponentName getActiveServiceComponentName() {
96        try {
97            if (mVoiceInteractionManagerService != null) {
98                return mVoiceInteractionManagerService.getActiveServiceComponentName();
99            } else {
100                return null;
101            }
102        } catch (RemoteException e) {
103            Log.w(TAG, "Failed to call getActiveServiceComponentName", e);
104            return null;
105        }
106    }
107
108    public boolean isSessionRunning() {
109        try {
110            return mVoiceInteractionManagerService != null
111                    && mVoiceInteractionManagerService.isSessionRunning();
112        } catch (RemoteException e) {
113            Log.w(TAG, "Failed to call isSessionRunning", e);
114            return false;
115        }
116    }
117
118    public void hideCurrentSession() {
119        try {
120            if (mVoiceInteractionManagerService != null) {
121                mVoiceInteractionManagerService.hideCurrentSession();
122            }
123        } catch (RemoteException e) {
124            Log.w(TAG, "Failed to call hideCurrentSession", e);
125        }
126    }
127
128    public void onLockscreenShown() {
129        try {
130            if (mVoiceInteractionManagerService != null) {
131                mVoiceInteractionManagerService.onLockscreenShown();
132            }
133        } catch (RemoteException e) {
134            Log.w(TAG, "Failed to call onLockscreenShown", e);
135        }
136    }
137
138    public void registerVoiceInteractionSessionListener(IVoiceInteractionSessionListener listener) {
139        try {
140            if (mVoiceInteractionManagerService != null) {
141                mVoiceInteractionManagerService.registerVoiceInteractionSessionListener(listener);
142            }
143        } catch (RemoteException e) {
144            Log.w(TAG, "Failed to register voice interaction listener", e);
145        }
146    }
147
148    public ComponentName getAssistComponentForUser(int userId) {
149        final String setting = Settings.Secure.getStringForUser(mContext.getContentResolver(),
150                Settings.Secure.ASSISTANT, userId);
151        if (setting != null) {
152            return ComponentName.unflattenFromString(setting);
153        }
154
155        // Fallback to keep backward compatible behavior when there is no user setting.
156        if (activeServiceSupportsAssistGesture()) {
157            return getActiveServiceComponentName();
158        }
159
160        Intent intent = ((SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE))
161                .getAssistIntent(false);
162        PackageManager pm = mContext.getPackageManager();
163        ResolveInfo info = pm.resolveActivityAsUser(intent, PackageManager.MATCH_DEFAULT_ONLY,
164                userId);
165        if (info != null) {
166            return new ComponentName(info.activityInfo.applicationInfo.packageName,
167                    info.activityInfo.name);
168        }
169        return null;
170    }
171
172    public static boolean isPreinstalledAssistant(Context context, ComponentName assistant) {
173        if (assistant == null) {
174            return false;
175        }
176        ApplicationInfo applicationInfo;
177        try {
178            applicationInfo = context.getPackageManager().getApplicationInfo(
179                    assistant.getPackageName(), 0);
180        } catch (PackageManager.NameNotFoundException e) {
181            return false;
182        }
183        return applicationInfo.isSystemApp() || applicationInfo.isUpdatedSystemApp();
184    }
185
186    private static boolean isDisclosureEnabled(Context context) {
187        return Settings.Secure.getInt(context.getContentResolver(),
188                Settings.Secure.ASSIST_DISCLOSURE_ENABLED, 0) != 0;
189    }
190
191    /**
192     * @return if the disclosure animation should trigger for the given assistant.
193     *
194     * Third-party assistants will always need to disclose, while the user can configure this for
195     * pre-installed assistants.
196     */
197    public static boolean shouldDisclose(Context context, ComponentName assistant) {
198        if (!allowDisablingAssistDisclosure(context)) {
199            return true;
200        }
201
202        return isDisclosureEnabled(context) || !isPreinstalledAssistant(context, assistant);
203    }
204
205    public static boolean allowDisablingAssistDisclosure(Context context) {
206        return context.getResources().getBoolean(
207                com.android.internal.R.bool.config_allowDisablingAssistDisclosure);
208    }
209}
210